In the One Line Rivals game, an AI opponent will be waiting for you, who will offer you a competition for ninety seconds. A set of round cells will appear in front of you, which you must fill with bright neon paint without lifting your hand or cursor from the screen. To win, you need to quickly complete tasks, the more you complete, the better. In the left and right corners you will see progress in gaining points. For each completed task you receive one point in One Line Rivals.